3700 E Union St, Seattle, WA 98122 Property Records

King County property record for 3700 E Union St, Seattle, WA 98122 · Last verified July 2026

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.25 ba · 3,240 sqft · built 1916
Lot Size	0.091 acres (3,946 sqft)
Owner	2 Individual Names on File
Last Sale	$1,880,000 (Mar 2025)
Tax Bill	$19,498 (2026)
Deeds & Mortgages	Jul 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`535020-0170`

Property Details

APN / Parcel Number

Primary APN	`535020-0170`
Alternative APN	`535020017005`

Interior

Bedrooms	4 Beds
Full Baths	3.25 Baths
Half Baths	2 Half Baths
Stories	1 Story
Building Area	3,240 sqft Living Area
Gross Area	3,490 sqft
1st Floor Area	1,140 sqft
Upper Floors Area	1,400 sqft
Basement Area	700 sqft
Finished Basement	700 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1916
Effective Year Built	Effective 1916
Lot Area	3,946 sqft (0.091 acres)
View / Lot	Water View
Garage Type	Attached
Garage Area	250 sqft
Parking Spaces	1 Parking Space
Porch	Open Porch
Porch Area	310 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C
Heating Fuel	Electric
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Account Number	535020017005
Street Address	3700 E UNION ST
City	SEATTLE
State	WA
Zip	98122-3457
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	MC KENZIE & DEMPSEYS LAKE WASH LESS ALLEY
Legal Range	04
Legal Township	25
Legal Section	34
Legal Subdivision	MC KENZIE & DEMPSEYS LK WN ADD
Legal Block	2
Legal Lot Number	15-16
Jurisdiction	KING WA
Township / Civil Division	SEATTLE
Census Block Group	2
Census Block	2003
Census Tract	7800

Owner

Source: King County records · APN 535020-0170

Assessment roll updated July 7, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on File
Mailing Address	121 LAKESIDE AVE, 204, SEATTLE, WA 98122-6585
Owner Type	Individual
Vesting	Husband and Wife

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Mar 21, 2025 · Amount on Record
Deed Sale	Mar 21, 2025 · Amount on Record
Prior Sale	Jul 31, 2017 · Amount on Record
Deed Document Number	2025405
Record Updated	Sep 20, 2026

July 2017: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	KING WA
Recording Date	Jul 31, 2017
Property Address	3700 E UNION ST, SEATTLE, WA 98122-3457
Document Number	0000001509
Map Reference	VOL7 PG20
Instrument Date	Jul 14, 2017
Instrument	20170731001509
Transaction Type	Transfer
Record Updated	Jul 30, 2021
Title Company	CHICAGO TITLE COMPANY OF WA

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1415 35TH AVE, SEATTLE, WA 98122-3406

Mortgage

Document Number	0000001510
Date	Jul 31, 2017
Instrument	20170731001510

Lender

Name	BOFI FEDERAL BANK
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Aug 01, 2047

Interest

Rate Type	Adjustable Rate
Rate	4.87%
Type Change Date	Aug 01, 2022
Change Frequency	Annually
Min Rate At Change	4.87%
Max Rate At Change	10.8%
Index	1-Year LIBOR
Max Rate	10.8%

Tax Assessment & Valuation

Source: King County records · Assessment roll updated July 7, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	Washington
County	King County
Municipality	Seattle City
Unified School District	Seattle Public Schools (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$19,498.00 (+11.07%)
2025	$17,555.00 (-47.32%)	$1,905,000 (+3.25%) Land $818,000 Building $1,087,000	$1,905,000 (+3.25%) Land $818,000 Building $1,087,000
2024	$33,325.00 (+110.82%)	$1,845,000 (-2.07%) Land $818,000 Building $1,027,000	$1,845,000 (-2.07%) Land $818,000 Building $1,027,000
2023		$1,884,000 (-) Land $763,000 Building $1,121,000	$1,884,000 (-) Land $763,000 Building $1,121,000
2022	$15,807.00	$1,884,000 Land $763,000 Building $1,121,000	$1,884,000 Land $763,000 Building $1,121,000

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, King County (53033C), updated September 23, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.